@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;700&display=swap');

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Noto Sans JP', sans-serif;
  background: linear-gradient(to right, #f0f0f0, #e6f0ff);
  color: #333;
  line-height: 1.6;
}

header.hero {
  position: relative;
  height: 40vh;
  background-image: url('images/jparc_BG.jpg');
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

.hero-overlay {
  background: rgba(0, 0, 0, 0.6);
  padding: 2rem;
  text-align: center;
  border-radius: 1rem;
  animation: fadeIn 1.5s ease-out;
}

nav ul {
  display: flex;
  justify-content: center;
  list-style: none;
  padding: 1rem;
  background-color: #1e3a8a;
  gap: 1.5rem;
  flex-wrap: wrap;
}

nav ul li a {
  color: white;
  text-decoration: none;
  font-weight: bold;
}

nav ul li a:hover {
  color: #ffd700;
}

main {
  padding: 2rem;
}

.responsive-img {
  max-width: 55%;
  border-radius: 0.5rem;
  box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}
.responsive-img-research {
  max-width: 95%;
  border-radius: 0.5rem;
  box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

footer {
  text-align: center;
  padding: 1rem;
  background: #1e3a8a;
  color: white;
  margin-top: 2rem;
}

.lang-switch {
  position: absolute;
  top: 1rem;
  right: 1rem;
}
.lang-switch a {
  background: white;
  color: #004e92;
  padding: 0.3rem 0.6rem;
  border-radius: 4px;
  text-decoration: none;
  font-weight: bold;
  font-size: 0.9rem;
}
.lang-switch a:hover {
  background: #ddd;
}


@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 768px) {
  nav ul {
    flex-direction: column;
    align-items: center;
  }
}

/* スクロールで表示アニメーション */
section {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease-out;
}
section.visible {
  opacity: 1;
  transform: translateY(0);
}

/* スクロール後のナビスタイル */
nav.scrolled {
  background-color: #0d2562;
  box-shadow: 0 2px 6px rgba(0,0,0,0.3);
}

/* ページトップボタン */
#topBtn {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  padding: 0.6rem 1rem;
  background: #1e3a8a;
  color: white;
  border: none;
  border-radius: 0.5rem;
  display: none;
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(0,0,0,0.2);
  z-index: 1000;
}
#topBtn:hover {
  background: #00aaff;
}

.highlight-quote {
  background: linear-gradient(to right, #0f172a, #1e293b);
  color: white;
  text-align: center;
  padding: 6rem 2rem;
  position: relative;
  overflow: hidden;
}

.typewriter {
  display: inline-block;
  font-size: 1.8rem;
  border-right: 2px solid white;
  white-space: nowrap;
  overflow: hidden;
  animation: typing 4s steps(30, end), blink 0.8s step-end infinite;
}

@keyframes typing {
  from { width: 0 }
  to { width: 100% }
}

@keyframes blink {
  50% { border-color: transparent; }
}

.parallax-quote {
  position: relative;
  height: 45vh;
  background-image: url('images/parallax-light2.jpg'); /* 光を含んだ宇宙っぽい画像が最適 */
  background-size: cover;
  background-attachment: fixed;
  background-position: center;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.quote-overlay {
  background-color: rgba(0, 0, 0, 0.5);
  padding: 2rem 4rem;
  border-radius: 1rem;
  text-align: center;
}

.quote-overlay h2 {
  color: #ffffff;
  font-size: 2rem;
  animation: fadeInUp 2s ease-out forwards;
  opacity: 0;
}

/* フェードインアニメーション */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px; /* ロゴとテキストの間隔 */
  padding: 1rem;
}

.footer-logo {
  width: 150px;
  height: auto;
  opacity: 1.0;
}

.profile {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  flex-wrap: wrap;
}

.profile-photo {
  max-width: 160px;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 0 6px rgba(0,0,0,0.3);
}


@media (max-width: 768px) {
  .hero-overlay h1 {
    font-size: 1.5rem;
  }

  .hero-overlay p {
    font-size: 1rem;
  }

  .quote-overlay h2 {
    font-size: 1.2rem;
  }

  .responsive-img,
  .responsive-img-research {
    max-width: 100%;
    height: auto;
  }

  .quote-overlay {
    padding: 1.5rem 1rem;
  }

  .highlight-quote {
    padding: 3rem 1rem;
  }

  .main-nav ul {
    flex-direction: column;
  }
}